Answer:
Step-by-step explanation:
we know that
The formula to solve a quadratic equation of the form is equal to
in this problem we have
so
substitute in the formula
Top:
36 + 2(3)
36 + 6
☆42
bottom:
36 - 4(2)(3)
36 - 24
☆12
Answer:
6
Step-by-step explanation:
distribute the negative to ger 3(2), since a negative times a negative is positive. Then just multiply
Answer:
Step-by-step explanation:
All the angles within a triangle equals to 180, and that square thing at a corner of the triangle means that the angle is 90 degrees, so:
20+6x+16+90=180
add stuff
6x+126=180
subtract 126 from both sides
6x=54
divide 6 from both sides
x=9